Method of toughing and grooving tapering boards



ITED STATES FATENT OFFIQE.

B. ll'. BARBER, OF BALLSTON SPA, NEW YORK.

METHOD OF TONGUING AND GROOVING TAPERING- BOARDS.

Specification of Letters Patent No. 14,220, dated February 12, 1856.

To all 'whom t may concern:

Be it known that I, B. J. BARBER, of Ballston Spa, in the county of Saratoga and State of New York, have invented a new and useful Improvement in Machines for Jointing and Tonguing and Grooving Boards and Planks; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure l, is a side view of my improvement. Fig. 2, is a transverse vertical section of ditto, (m), Fig. 1, showing the plane of section.

Similar letters of reference indicate corresponding parts in the two figures.

My invention consists in having the bed and one of the cut-ters so arranged that they may be moved up or down while the board or plank is being fed between the cutters as will be presently shown and described, so that the boards or planks, when of taper form, may be ointed or tongued and grooved equally as well and with the same facility as if the edges were parallel.

To enable those skilled in the art to fully understand and construct my invention, I will proceed to describe it.

A, represents the frame of the machine of rectangular form and constructed in any proper manner to support the working parts.

B, represents a shaft placed transversely on the upper part of the framing A, and

Y having a cutter head O, at one end with the cutters (a) upon it.

D, represents a shaft, also placed transversely on the upper part of the frame A, and having a feed roller E, at one end. F, is a spring which bears upon this shaft, said spring being attached to the upper part of the frame, see Fig. l. The feed roller E, is in line with the cutter head O.

Gr, is a bed which has screw bolts (b), (b),

- passing transversely through it, said bolts also passing through slotted uprights H, II, at one side of the frame A. The bed has two racks I, I, attached to it, said racks projecting downward through openings in the lower side piece of the frame. In each rack I, I, a pinion J, gears, said pinions being placed on a shaft K, which has a worm wheel L, at one end and also a crank M.

N, is a screw placed on a vertical shaft O, at one end of the frame A. This shaft has its bearing (c) on a sliding bar P, fitted in the end of the frame A, said block being operated by a lever Q, so that the screw N, may be shoved in and out of gear with the worm wheel L, as may be desired. The upper end of the shaft- O, has a pulley (d) upon it around which a belt (e) passes, said belt also passing around a shaft R, at the opposite end of the frame.

S, is a pressure roller at the end of an adjustable arm T, which is secured to the upper surface of the bed G, and U, is a pressure roller at the end of an adjustable arm V, which is attached to a plate f, at the upper part of the frame A. IV, is also a pressure roller at the outer end of a spring X, which is attached to the same plate as the arm V Y, Y, are friction rollers on the upper surface of the bed G, and X, X, are also friction rollers which are attached to the outer ends of adjustable rods, which pass transversely through one of the upper side pieces of the frame A.

The bed G extends the whole length of the frame A, and a plate B', when the boards or planks are jointed, is placed at the back part of the bed, see Fig. 1.

C', is a bar which is attached at right angles to the bed G, at about its center. This bar has a projection at its outer end which projection forms a bearing for one end of a shaft D, the opposite end of this shaft having its bearing in the underside of the bed G. The outer end of the shaft D, has a cutter head E upon it, with cutters (g) attached.

The operation is as follows: If the boards or planks are to be jointed, proper cutters are attached to the heads C, F. If the boards or planks are of taper form, that is, one end wider than the other, the screw N is thrown in gear with the worm wheel L, the bed G having been previously raised so that the space between the two cutter heads will conform to the widest end of the board. Motion is then given the driving pulley A in proper manner and the board or plank, shown in red, being placed edgewise on the bed G, is fed by the roller E, between the two cutter heads O, F, and the pressure and friction rollers S, U, W, Y, Z, and the upper and lower edges of the board will be planed smooth or jointed or a tongue will be out on one end and a groove in the other, according to the cutters employed. The widest end of the board is first placed between the cutter heads and as the board is fed along on the bed G, the bed is gradually raised by the screw N, worm wheel L, pinions J, J, and racks I, I, so that the diminishing width of the board is compensated for and the critters brought gradually nearer together, it being understood that the shaft D', with its cutter head F, moves with the bed G, and also that the feed roller E, is ailowed to rise or fall so that it may be accommodated to the varying width o the board, and still be kept properly 1n position in consequence of the spring F.

The board or plank may be fed between the cutter heads in a reverse manner, that is, the narrow end first, by giving a reverse movement to the bed G.

The advantage of the above invention, is, that boards or planks may be jointed or tongued and grooved in taper form and in certain localities and districts where lumber is scarce and high a great saving is etl'ected thereby, because the boards or planks need not to be cut with parallel edges, but may be tongued and grooved with their natural taper as sawed from the log, and may be worked up for ceiling and such purposes equally as well as if the edges were parallel.-

In case boards or planks with parallel edges are to be operated upon, the bed G, may be made stationary by tightening the screw bolts (Z9) and throwing the screw N, out of gear with the worm wheel L. The machine is then operated in the usual manner.

I-Iaving thus described my invention, what I claim as Ynew and desire to secure bynLetters Patent, is,

The movable bed G, with shaft D, and cutter head F', attached, said bed being operated substantially as herein shown and described, for the purpose specified.

B. J. BARBER.

Witnesses:

ABRAM MIDDLEBROOK, O. M. MIDDLEBRooK. 

